AFAIK it runs Jellybean (4.1)
I am sorry that I cant help you on that as I am not hearing person to hear if there is sound lags as it is impossible for me to know....
sorry about that but I let you know what versions of Andriods is as far as I know that you can update the firmware![]()
Its a 7" android tablet with controls built in.
See pic for some specs
And manufacturers page is here
http://www.jxd.hk/products.asp?id=627&selectclassid=009006